Smoke consuming ffenaoe



(No Model.) 3 Sheets-Sheet 1.

W. 8; T. H. ACKROYD 81; J. WILLOUGHBY, SMOKE OONSUMING FURNACE.

No. 497,741. Patented May 16, 1893.

o o o l o e o O o T o o o o A o o /l azhula4 (No Model.) 3 Sheets-Sheet2.

W. 8; T. H. AOKROYD & J. WILLOUGHBY.

SMOKE GONSUMING FURNACE.

Patented May 16,1893.

(No Model.) 3 Sheets-Sheet 3.

W. 85 T H. AOKROYD & J. WILLOUGHBY.

SMOKE GONSUMING FURNACE.

,741. Patented May 16,1893.

1n: mmws FEYERS co, PHOTU-LHHQ, WAuNINliYON,

UNlTED STATES PATENT OFFICE.

l/VILLIAM ACKROYD AND THOMAS HENRY ACKROYD, OF BIRKEN SHAW, AND JOHNVVILLOUGHBY, OF GOMERSAL, ENGLAND.

SMOKE-CONSUMING FURNACE.

SPECIFICATION forming part of Letters Patent No. 497,741, dated May 16,1893.

Application filed April 22, 1891. Serial No. 389,984. (No model.)Patented in England July 10, 1888 No. 10,009, and April 10,1890.No.5,453; in Germany January 30. 1891, No. 60,270; in Austria-HungaryFebruary 6, 1891, No. 7,084 and No. 22.304: in Switzerland February 7,189]. No. 8,177; in France February 9, 1891, No. 211.272, and in BelgiumFebruary 9,

.To all whom it may concern.-

Be it known that we, WILLIAM AcKRoYD and THOMAS HENRY AOKROYD, residingat Birkenshaw, and JOHN WILLOUGHBY, resid- M5 ing at Gomersal, Yorkcounty,England, subjects of the Queen of Great Britain, have inventedcertain new and useful Improvements in Smoke-Consuming Furnaces, (forwhich we have obtained Letters Patents in I Great Britain, No. 10,009,dated July 10, 1888,

and No. 5,453, dated April 10, 1890; in Germany, No. 60,270, datedJanuary 30, 1891; in Austria-Hungary, No. 7,084 and No. 22,304, datedFebruary 6, 1891; in France, No. 211,272,

[ dated February 9,1891; in Belgium,No.93,708, dated February 9, 1891,and in Switzerland, No. 3,177, dated February 7, 1891,) of which thefollowing is a full, clear, and exact specification.

This invention has for its object to provide a new and improved boilerfurnace, and it consists in the features of construction and thecombination or arrangement of devices hereinafter described and claimed,reference being made to the accompanying drawings, in

which- Figure 1 is afront elevation of a stationary boiler having ourinvention applied thereto. Fig. 2 is a longitudinal sectional elevationof c the same, and Fig. 5 is a broken plan view.

In order to enable those skilled in the art to make and use ourinvention we will now de scribe the same in detail, referring to thedrawings wherein-- 5 The letter A, indicates a boiler, B the flues,

and C the furnace doors provided withopeningsDforreceivingtheairconductingtubes E.

The air conducting tubes E form one hinge or pivot of the furnace doors,as at F, while the screws G, and brackets G form the other hinge orpivot thereof.

The tubes E are passed along the bottom flue of the boiler to the rearthereof, as in Fig.

3, and rise in the chimney or shaft J, as in Fig. 2.

The tubes E, each terminate in a funnel or other shaped air receivingmouth K into which extends a steam nozzle or pipe L which follows thecourse of the tubes E and extends horizontally beneath the boiler to thefront thereof from whence it rises vertically and connects with thesteam space of the boiler at the point M, where the pipe L is chargedwith steam, which steam is highly superheated in its passage through thepipe L beneath the boiler and through the chimney or shaft J to thepoint where said pipe Lenters the funnel or air receiving mouth K.

The tube E is provided with a cover P for cleaning purposes. It also hasan opening such as R for the insertion of testing apparatus to show theheat of the steam and air before it passes to the fire of the furnace.

Each pipe L is provided with a valve N, which when turned on allows thesteam to pass forward along the pipes to the mouth or opening K, of thetube E, which it enters in a dry state, and greatly increases the draftand heat in the tube E, and passes with the hot air to the door of thefurnace where it is delivered upon the burning fuel and mixes with thegases or products of combustion, igniting and increasing suchcombustion, and consuming and rendering invisible the smoke passing tothe chimney shaft.

Dampers or valves are provided in the tubes to regulate the amount ofhot air admitted to the furnace as desired. The valves are pref erablyopened after each firing of their respective furnaces for a short time,and may be operated by hand or by automatic mechanism of any kind,operated by the opening and closing of the doors for stocking purposes.

Having thus described ourinvention, what we claim -is The combinationwith a boiler furnace having an lip-take or chimney J, of horizontal airIn testimony whereof we have affixed our conducting tubes E rising inthe np-take or signatures in the presence of two witnesses. chimney andhaving portions extending. in

front of the furnace and provided with door AOKROYD' A 4 u T. HENRYAGKROYD. 5 hinges F carlymg doors 9 through which poi- JOHN WILI OUGHBYtions of said tubes extend to discharge hot air above the fire, andsteam pipes L extending Witnesses: from the steam space of the boiler,thence WM. AOKROYD, J 1111., horizontally below the latter andvertically Gomersal, N. Leeds.

[0 through the uptake or chimney into the air JOHN T. WHITTALL,

conducting tubes, substantially as described. Bradford Road, Birkenshaw.

